Re: [PATCH V2 0/4] NTB function for PCIe RC to EP connection

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On Tue, Feb 22, 2022 at 10:24 AM Frank Li <Frank.Li@xxxxxxx> wrote:
>
> This implement NTB function for PCIe EP to RC connections.
> The existed ntb epf need two PCI EPs and two PCI Host.
>
> This just need EP to RC connections.
>
>     ┌────────────┐         ┌─────────────────────────────────────┐
>     │            │         │                                     │
>     ├────────────┤         │                      ┌──────────────┤
>     │ NTB        │         │                      │ NTB          │
>     │ NetDev     │         │                      │ NetDev       │
>     ├────────────┤         │                      ├──────────────┤
>     │ NTB        │         │                      │ NTB          │
>     │ Transfer   │         │                      │ Transfer     │
>     ├────────────┤         │                      ├──────────────┤
>     │            │         │                      │              │
>     │  PCI NTB   │         │                      │              │
>     │    EPF     │         │                      │              │
>     │   Driver   │         │                      │ PCI Virtual  │
>     │            │         ├───────────────┐      │ NTB Driver   │
>     │            │         │ PCI EP NTB    │◄────►│              │
>     │            │         │  FN Driver    │      │              │
>     ├────────────┤         ├───────────────┤      ├──────────────┤
>     │            │         │               │      │              │
>     │  PCI BUS   │ ◄─────► │  PCI EP BUS   │      │  Virtual PCI │
>     │            │  PCI    │               │      │     BUS      │
>     └────────────┘         └───────────────┴──────┴──────────────┘
>         PCI RC                        PCI EP
>
>
>
> Frank Li (4):
>   PCI: designware-ep: Allow pci_epc_set_bar() update inbound map address
>   NTB: epf: Allow more flexibility in the memory BAR map method
>   PCI: endpoint: Support NTB transfer between RC and EP
>   Documentation: PCI: Add specification for the PCI vNTB function device
>

Ping

>  Documentation/PCI/endpoint/index.rst          |    2 +
>  .../PCI/endpoint/pci-vntb-function.rst        |  126 ++
>  Documentation/PCI/endpoint/pci-vntb-howto.rst |  167 ++
>  drivers/ntb/hw/epf/ntb_hw_epf.c               |   48 +-
>  .../pci/controller/dwc/pcie-designware-ep.c   |   10 +-
>  drivers/pci/endpoint/functions/Kconfig        |   11 +
>  drivers/pci/endpoint/functions/Makefile       |    1 +
>  drivers/pci/endpoint/functions/pci-epf-vntb.c | 1424 +++++++++++++++++
>  8 files changed, 1775 insertions(+), 14 deletions(-)
>  create mode 100644 Documentation/PCI/endpoint/pci-vntb-function.rst
>  create mode 100644 Documentation/PCI/endpoint/pci-vntb-howto.rst
>  create mode 100644 drivers/pci/endpoint/functions/pci-epf-vntb.c
>
> --
> 2.24.0.rc1
>




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